A woman who evaded authorities for a week after the fatal shooting of a teenager near a large Richmond housing complex turned herself in Monday, police said.

Melinda Leketia Gaffney, 30, surrendered at San Francisco police headquarters "sometime midmorning," Richmond police Sgt. Nicole Abetkov said Tuesday. She remained in police custody in San Francisco and is expected to be transferred to Contra Costa County for processing later this week, Abetkov said. She will be held in lieu of $1 million bail.

Police had been looking for Gaffney since April 8, when witnesses told police she argued with 16-year-old Terrance Folks shortly before Folks was shot to death in front of the Crescent Park Apartments complex in 3900 block of Fleming Avenue, about a half-mile from Booker T. Anderson Park.

Witnesses to the shooting told police that a white 1999 Lexus was involved and provided a license plate number that registered to Gaffney. They also told authorities that Gaffney and Terrance knew each other and were arguing before the 10:20 p.m. shooting, Abetkov said. Police found the Lexus at an undisclosed location last Wednesday.

Police said Terrance was shot at least one time and was lying in the street when they arrived. Rescuers were unable to revive him, and he was pronounced dead at the scene.

The homicide was the third killing in the city of Richmond this year; all of the slayings came in a span of less than three weeks. Clarence Wesley Celestine, 24, was shot to death at South 35th Street and Wall Avenue on March 21, less than 24 hours after 43-year-old Tammi Baker was gunned down at South Fourth Street and Florida Avenue.